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2 layers100 × 80 mmReferences no gnd loop, the printed circuit board in 3D

References no gnd loop

drtrigon/eagle1

Results of eagle and kicad CI from travis are stored in https://github.com/drtrigon/eagle/tree/result/pcb branch and linked/shown in https://github.com/drtrigon/sketchbook repo.

Size
100 × 80 mm
Copper layers
2
Thickness
1.6 mm
Parts
20
Nets
21
Pads
80
Tracks, vias
90, 1
Pours
5
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
7 Apr 2018
Updated
17 Mar 2019

Overview

References no gnd loop is an open-source printed circuit board by drtrigon, from the drtrigon/eagle repository on GitHub, published under the MIT licence. It is a 2-layer board of 100 × 80 mm with 20 parts on 21 nets, routed with 90 tracks and 1 via.

It is built around the INA118P. Its parts include 5 capacitors, 5 connectors and 4 ICs.

Main components

1

README

README.md

Projekte

design rule check status PCB Build Status Build Status

Results of eagle and kicad CI from travis are stored in https://github.com/drtrigon/eagle/tree/result/pcb branch and linked/shown in https://github.com/drtrigon/sketchbook repo. See there and in .travis.yml for more info.

(might make sense to split projects off into separate repos/submodules)

N64TinyUSB

projects/N64TinyUSB/N64TinyUSB_HelveTiny_1.0.brd from EDRC.me

Order: make sure to select PCB Thickness 2mm and "Gold Fingers"!

based on boxtec.ch Helvetiny 1.0 PCB design:

code/firmware (design based on attiny45 n64-usb)

Built using the attiny45 n64-usb AVR source files. Works out of the box but emulates 1 device only (that contains both controller).

https://github.com/drtrigon/sketchbook/tree/master/cli/n64dual_tiny45

Hint: Order PCB directly

Upload the GERBER files below to https://jlcpcb.com/quote and order.

Drone_MultiWii / FlightController

projects/Drone_MultiWii/FlightController.brd from EDRC.me

arduino-papilio_1-WireSniffer_Rev1

projects/arduino-papilio_1-WireSniffer_Rev1/1-Wire_Sniffer_REV1.brd from EDRC.me

DACRackUnit

projects/DACRackUnit/reference-tee-16pin.brd from EDRC.me projects/DACRackUnit/power-supply.brd from EDRC.me projects/DACRackUnit/addressing-auto.brd from EDRC.me projects/DACRackUnit/reference-tee-15pin.brd from EDRC.me projects/DACRackUnit/addressing-nand.brd from EDRC.me projects/DACRackUnit/references-no-gnd-loop.brd from EDRC.me projects/DACRackUnit/addressing-manual-gnd.brd from EDRC.me projects/DACRackUnit/high-power-supply.brd from EDRC.me

Setup

I would like to use features like CI (continous integration) keep a copy/mirror on e.g. github and more.

Maintaining a copy/mirror (more precise: with 2 remotes overloaded origin) on GitHub also allows to use GitLab and GitHub together and by that all the nice featurs on GitHub. See also; https://steveperkins.com/migrating-projects-from-github-to-gitlab/

"Option 2: Overload Origin with Both Remotes (needs one single pull/push only)"; in order to clone and set this repo up use:

text
$ git clone file://///data/mount/gvfs/smb-share:server=.../01git/eagle.git
$ cd eagle
$ git remote set-url --add origin https://github.com/drtrigon/eagle.git

you can check the settings with:

text
$ git remote -v
origin  /data/mount/gvfs/smb-share:server=.../01git/eagle.git/ (fetch)
origin  /data/mount/gvfs/smb-share:server=.../01git/eagle.git/ (push)
origin  https://github.com/drtrigon/eagle.git (push)

Enable EDRC.ME for a Repository (for Eagle)

http://www.edrc.me/docs/

Enable Travis CI for a Repository (for Eagle)

https://github.com/drtrigon/test-eagle-edrc/blob/master/.travis.yml (does not work reliably yet)

Login to Travis-CI using the GitHub account and enable Travis-CI for the given repo.

Add a .travis.yml file to your project, commit, pull/push and enjoy.

A word of caution; the travis run will at the end - if successfull - try to push the results back to this repo.

Further Info

EDRC.me: https://michaelblouin.ca/blog/2018/02/25/automate-design-rule-checks-autodesk-eagle/

gerber (travis or local python script): http://www.rocketnumbernine.com/2011/12/14/automating-gerbers-from-eagle

text
...
# create top copper (cmp), bottom copper (sol), top solder mask (stc), bottom solder mask (sts), {top} silkscreen (plc)
${EAGLE} -X -dGERBER_RS274X -o${outputfile}.cmp ${board} Top Pads Vias
${EAGLE} -X -dGERBER_RS274X -o${outputfile}.sol ${board} Bottom Pads Vias
#${EAGLE} -X -dGERBER_RS274X -o${outputfile}.mil ${board} Milling
${EAGLE} -X -dGERBER_RS274X -o${outputfile}.plc ${board} Dimension tPlace tNames
${EAGLE} -X -dGERBER_RS274X -o${outputfile}.stc ${board} tStop
${EAGLE} -X -dGERBER_RS274X -o${outputfile}.sts ${board} bStop
#${EAGLE} -X -dGERBER_RS274X -o${outputfile}.crc ${board} tCream
#${EAGLE} -X -dGERBER_RS274X -o${outputfile}.dpv ${board} Drills
#${EAGLE} -X -dGERBER_RS274X -o${outputfile}.drh ${board} Holes
...

(mill and drill needs: gerb274x-mill-drill.cam)

Generate schematic, PCB and GERBER from KiCAD (TODO)

License

The content of this project itself is licensed under the Creative Commons Attribution 3.0 license, and the underlying source code used to format and display that content is licensed under the MIT license, see the LICENSE file for license rights and limitations (MIT).

Parts

20
QtyValueFootprintReferences
5100nFreferences-no-gnd-loop:C050-025X075C1_1, C11, C12, C21, C22
5SMB-50OHMreferences-no-gnd-loop:B-30P0_IN1, RP0, RP1, RP2, RP3
42.2uFreferences-no-gnd-loop:B45181BCP11, CP12, CP21, CP22
4INA118Preferences-no-gnd-loop:DIL08IC0, IC1, IC2, IC3
110uFreferences-no-gnd-loop:B45181BCP1
1WAGO-3references-no-gnd-loop:WAGO-3SP0

Questions

How big is the References no gnd loop PCB?

It measures 100 × 80 mm and has 2 copper layers, 1.6 mm thick.

What parts does the References no gnd loop use?

20 parts, built around the INA118P. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the References no gnd loop KiCad files?

From the drtrigon/eagle repository on GitHub, at the commit this page was made from: the board is projects/DACRackUnit/references-no-gnd-loop/references-no-gnd-loop.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the References no gnd loop design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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8
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